package com.atguigu.springcloud.alibaba.service.impl;

import com.atguigu.springcloud.alibaba.dao.OrderDao;
import com.atguigu.springcloud.alibaba.domain.Order;
import com.atguigu.springcloud.alibaba.service.AccountService;
import com.atguigu.springcloud.alibaba.service.OrderService;
import com.atguigu.springcloud.alibaba.service.StorageService;
import io.seata.spring.annotation.GlobalTransactional;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * @author xiangdd
 * @since 2021/12/27
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Resource
    private OrderDao orderDao;
    @Resource
    private StorageService storageService;
    @Resource
    private AccountService accountService;

    /**
     * 创建订单->调用库存服务扣减库存->调用账户服务扣减账户余额->修改订单状态
     * 简单说：下订单->扣库存->减余额->改状态
     * @param order
     */
    @Override
    // 添加全局事务注解，name自定义唯一就好，rollbackFor定义何种异常回滚
    @GlobalTransactional(name = "fsp-order-transaction",rollbackFor = Exception.class)
    public void create(Order order) {

        // 1、创建订单
        log.info("------------>开始新建订单");
        orderDao.create(order);

        // 2、扣减库存
        log.info("-------->订单微服务开始调用库存，做扣减count");
        storageService.decrease(order.getProductId(),order.getCount());
        log.info("-------->订单微服务开始调用库存，做扣减end");

        // 3、扣减账户
        log.info("-------->订单微服务开始调用账户，做扣减money");
        accountService.decrease(order.getUserId(),order.getMoney());
        log.info("-------->订单微服务开始调用账户，做扣减end");

        // 4、修改订单状态，从零到1,1代表已经完成
        log.info("-------->修改订单状态开始");
        orderDao.update(order.getUserId(),0);
        log.info("-------->修改订单状态结束");

        log.info("-------->下订单结束了，O(∩_∩)O哈哈~");

























    }
}
